75255220 has 24 divisors (see below), whose sum is σ = 158205600. Its totient is φ = 30069792.

The previous prime is 75255179. The next prime is 75255221. The reversal of 75255220 is 2255257.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75255221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27891 + ... + 30469.

It is an arithmetic number, because the mean of its divisors is an integer number (6591900).

Almost surely, 2^75255220 is an apocalyptic number.

It is an amenable number.

75255220 is an abundant number, since it is smaller than the sum of its proper divisors (82950380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75255220 is a wasteful number, since it uses less digits than its factorization.

75255220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047 (or 4045 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 75255220 is about 8674.9766570291. The cubic root of 75255220 is about 422.1941485900.

The spelling of 75255220 in words is "seventy-five million, two hundred fifty-five thousand, two hundred twenty".